John Denis Sullivan (born 8 March 1988) is an English retired professional footballer who played as a goalkeeper.
Born in Sompting, West Sussex,[1] John Sullivan signed professional forms with Brighton & Hove Albion during the summer of 2005, but didn't make a competitive appearance for the club until 28 October 2008, when John started in place of the injured Michel Kuipers, during the 3–2 victory over Leicester City.
[10] Having retained his first choice goalkeeper in the early of the season, Sullivan soon lost his first team place in goal after suffering an injury and was replaced by Stephen Henderson.
[16] Charlton acted swiftly in the following transfer window to bring Sullivan to the club on permanent basis after a string of impressive performances, securing a two-year deal on 31 May 2011.
[17] Sullivan made his first appearance for Charlton after signing permanently in the summer when he came on as a sixth-minute substitute against Leyton Orient after Ben Hamer was sent off for handling the ball outside his area.